I am quite the sucker for cooperative games. To me, there's no better experience than tackling an objective or taking down a sinister baddy with a bud right by my side -- oh, and couch co-op is preferred. Adversarial multiplayer is fun and quite addicting, but at the end of the day, I'd prefer to play a mission or two of Gears of War, Left 4 Dead, or even Army of Two.
I was instantly hooked when I heard about The Darkness II's co-operative element, "Vendettas." Utilizing dark forces along with three other players as we bring it to all who stand in our way sounds like a grade A idea, and in a lot of ways it is. What could be better than wielding a Darkness-empowered axe?